I tried to come up a list without bias. Also I only allowed a game to show up on one catagory unless otherwize noted. Some genres have more rated games then others depending on popularity or what I have personally played. Soon I will release my top 20 games this generation. Also Awards for graphics, sound, DLC, and more.
Best FPS (Non-military)
1-Halo Reach
2-Bioshock
3-Rage
4-Metro 2033
5-Riddick
Others that should get an honorable mention- Crysis 2, Bulletstorm, Resistance 3, Borderlands, Killzone 3, The Orange Box and Syndicate. This is far and away the best enre with the most titles of high quality. Every game I have mentioned is a must own.
Best Military Shooter):
1-Black Ops
2-MAG
3-Bad Company 2
4-Homefront
5-Modern Warfare
Best Third Person Shooter:
1-Gears of War 3
2-Spec Ops The Line
3-Uncharted 2
4-Shadows of the Damned
5-Gears of War
Best Racing game (non-arcade):
1-Dirt 2
2-Dirt 3
3-Forza 4
4-Grid
5-Project Gotham 4
Best Arcade Racer:
1-Burnout Revenge
2-Motorstorn Apacolypse
3-Dirt Showdown
4-Need for Speed Hot Pursuit
5-Need for Speed The Run
Car Combat Game:
1-Split/Second
2-Twisted Metal
3-Modnation Racers
4-Blur
5-Mario Kart Wii
Best RPG:
1-Mass Effect 3
2-Fallout New Vegas
3-Fable 2
4-The Witcher
5-Fallout 3
Best Fighting Game:
1-Mortal Kombat
2-Super Smash Brothers Brawl
3-Blazblue CS
4-Super Street Fighter 4 Arcade Edition
5-Virtua Fighter 5 Final Showdown
Best Action Game:
1-Batman Arkham Asylum
2-Red Dead Redemption
3-inFamous 2
4-Max Payne
5-Assassins Creed 2
Stealth/Tatical Game:
1-Deus Ex Human Revolution
2-Splinter Cell Conviction
3-Metal Gear Solid 4
Survival Horror:
1-Condemned
2-Left 4 Dead 2
3-Alan Wake
4-Dead Island
5-Dead Space 2
Hack N Slash:
1-Bayonetta
2-Heavenly Sword
3-Ninja Gaiden 2
4-God of War 3
5-Dante's Inferno
Platformer 2D
1-Rayman Origins
2-Little Big Planet
3-Super Mario Brothers Wii
Platformer 3D
1-Kameo Elements of Power
2-Mario Galaxy
3-Banjo Nuts And Bolts
4-Ratchet and Clank FTOD
5-Ratchet and Clank A Crack in Time
Best Puzzle Game:
Portal 2
Best God Game/Life Sim:
Viva pinata Trouble in Pardise
Sports Games:
1-All Pro Football 2k8
2-NCAA Football 2013
3-FIFA 2012
4-Hot Shots Gold Out of Bounds
5-NHL 2012
Best Alternative game (Mixed Genre or non-catagory)
1-Mirrors Edge
Best RTS:
Halo Wars
Best New Game/Series (Previous Winners Included)
1-Mirrors Edge
2-Gears of War
3-Batman Arkham Series
4-Uncharted
5-Portal
Note-Bioshock was not included because it is a spiritual successer to System Shock
Top 10 Arcade Titles:
1-Wipeout HD
2-Trials Evolution
3-NBA Jam
4-Couter-Strike
5-Peggle
6-FEZ
7-NFL Blitz
8-Bastion
9-Shadow Complex
10-Joyride Turbo
Honorable Mention- Super Meat Boy, Limbo, Splosion Man, Braid, Fat Princess, Flower, and Hydro Thunder Hurricane.
Best Move Game:
Sports Champions
Best Kinect Gmaes:
1-Dance Central
2-Gunstringer
3-Kinect Sports
4-Kinect Adventures
5-Kinectimals
Honorable Mention- None these are the only 5 good games on the system.